Early in the month of May, 1861, C. H. Frederick and David McGibbon, two prominent citizens of St. Louis, Mo., called on General Lyon, and proffered to raise a regiment of infantry, to serve for three years, or during the war. C. H. Frederick, having previously served his country in a military capacity, and being familiar with military tactics, was deemed by General Lyon, a very suitable person to engage in the undertaking, and immediately authorized to recruit and organize a regiment, and to have command of the same.

Colonel Frederick, at the breaking out of the rebellion, was engaged in a lucrative business in St. Louis, but at the call of his country he sacrificed his profitable interests, and gave his energies to the preservation of the Union. After an immense amount of difficulty, Colonel Frederick and his co-worker, Major McGibbon, working night and day, succeeded in enlisting enough loyal friends in and around St. Louis, to enable them to accomplish their purpose. By the middle of June three companies, and a nucleus of the fourth, was collected and rendezvoused at the St. Louis arsenal. Captains Hale, Renfrew, Veatch, and Elliott commanding.

About this time Captain S. W. Kelly was induced to become a recruiting officer, to assist in filling up the regiment. By the 24th of June he had recruited seventy men in his own neighborhood, and on that day an election was held, and S. W. Kelly was unanimously elected Captain, John Kelly First Lieutenant, and H. J. Maynard Second Lieutenant. On the 6th day of August, 1861, Captain Kelly numbered on the muster roll of his company, (F,) at the St. Louis Arsenal, seventy-one men; and through his influence three other companies had joined in the organization of the regiment. Captain Stookey, of Belleville, Ill., had recruited a large company of men for the service, and was now induced to join this regiment, thus making nine companies in rendezvous at the Arsenal on the 6th day of August.

As soon as the first three companies were formed, and before they were uniformed, they were sent down to Cape Girardeau, Mo., that place being threatened by the enemy, to assist in building fortifications. As soon as the next three companies were mustered in, and before they were uniformed, they were ordered to Pilot Knob, Mo. Here they underwent great hardship, not having uniforms or blankets, and scarcely anything to make them comfortable. The other three companies on their arrival at St. Louis, were sent with Colonel Frederick up the South-west branch of the Pacific railroad, to protect the bridges, etc., in order to keep that road open for the retreat of General Lyon's army after their defeat at Wilson's Creek, Mo. This work being accomplished, Colonel Frederick returned to St. Louis, and after overcoming many difficulties succeeded in getting the nine companies back to the arsenal. The next thing to be done, was to have them uniformed and drilled. This, also, was perseveringly and successfully attended to by the Colonel and Major McGibbon.

The men and the officers with one or two exceptions, were sadly deficient in a knowledge of military tactics or drills, and Colonel Frederick consequently took upon himself the task of drilling the regiment daily. In a short space of time he succeeded in making them quite well acquainted with company and battalion drills.

About the 1st of September 1861, Colonel Frederick and Major McGibbon, in order to promote the welfare of the regiment and secure good to the Union cause, tendered the command to Captain J. C. Kelton, then A.A.G. for General Fremont. Captain Kelton, after a time, accepted the command with the proviso that Frederick should have the Lieut. Colonelcy, and McGibbon the Majority. This arrangement was speedily confirmed by an election of the officers of the regiment, and the organization became complete,—one company only being required to make a full regiment. Upon Colonel Kelton assuming command, he procured the Tenth Company, viz. Company K, Captain Snyder, of Chicago, Ills., commanding, and this completed the Ninth Missouri, Volunteer Regiment.

Company K, was organized in the city of Chicago in the month of September, 1861. A majority of the men were recruited by Lieutenant Abram J. Davids. It was originally intended as a company of sappers and miners, to be attached to Bissell's Engineer Regiment of the West. At least that was the inducement held out to the men. On the 5th of September the company was not quite full, and its services being needed immediately, forty-five men were taken from the Forty-Second Illinois, (then organizing at Chicago), and enrolled with the company on its muster into service on the 6th day of September, making an aggregate of ninety-seven men. Their camp equipage was drawn on the night of the 6th, and on the morning of the 7th marched under the command of Captain Henry N. Snyder, to the Chicago, Alton and St. Louis depot, and took the cars for St. Louis. They arrived at Illinoistown the evening of the same day, and in the morning crossed the Mississippi, and marched through St. Louis to Benton barracks; they here learned that they were to be attached to the Ninth Regiment Missouri Volunteer Infantry. It caused considerable dissatisfaction in the company, not that they had any objection to the regiment, but they wished to enter the arm of service for which they were recruited. Notwithstanding, there was no disobedience of orders.

On the 2d of September they were armed with Harper's Ferry rifles, and well equipped throughout; no company in the service ever started out better supplied with ordnance and camp equipage. On the afternoon of the 22d of September they left Benton barracks, marched to the depot, and took the cars en route for Jefferson City, where they arrived the next evening. They joined the Ninth Missouri on the following morning, and embarked with them on the steamer War Eagle, September 30th, bound for Boonville.

On the 22d of September, 1861, the regiment was ordered to Jefferson City, Mo., and on the 26th again ordered to Boonville, Mo. After remaining in camp a short time, Colonel Kelton was placed in command of a brigade, under General Pope. The brigade consisted of the Ninth Missouri, Lieut. Colonel Frederick, commanding; Thirty-Seventh Illinois, Colonel Julius White, commanding, and the Fifth Iowa, Colonel Worthington, commanding.

While at the St. Louis Arsenal, two companies under the command of Lieut. Colonel C. H. Frederick, were sent by Colonel F. P. Blair, up the Mississippi river to Howell's Island, where he captured five valuable steamboats from the hands of the rebels, who were about to use them to cross their forces to the south side, to join the rebel General Price. The total value of property thus secured from the hands of the rebels, amounted to two hundred and fifty thousand dollars. He also skirmished over the island in search of a rebel camp, and by this movement it was effectually broken up. Those two companies were composed of picked men from the different companies of the regiment.